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LHT® E-POWER

Protective pipe for underground cabling of high and extra-high voltage cables up to 525 kV and a continuous service temperature of over 70°C.

TECHNICAL SPECIFICATIONS

  • SDR
    7,4 | 11 | 17 | more on request
  • Dimension
    32 - 630 mm
  • Usage
    High and extra-high voltage cables up to 525 kV
  • Pipe structure
    EMDS protection pipe according to DIN and EN standards | solid wall pipe made of modified polyethylene with smooth ends
  • Marking
    Solid wall pipe single or multi-layered (optionally with coloured longitudinal stripes distributed around the circumference) | with complete metre marking according to standard | optionally with dimensionally added protective jacket made of modified polyolefin compound
  • Application/­intended use
    EMDS protective pipe for buried installation suitable for blowing in, pulling in and inserting cables and fibre optics
  • Special feature(s)
    Long-term temperature stable with and without internal pressure load | optionally with longitudinally grooved inner surface | optionally with optimised, light-coloured inner layer for camera inspection
  • Material
    PE-RT | Minimum service life 50a at 70°C
  • Delivery forms
    straight length | coil | drum

System components

  • LHT® Electrofusion fitting


    for a material-locking and high-temperature resistant connection of protective pipes. The installation of protective pipe strings with bending radii is fully possible.
  • EMDS push-fit coupler


    for a high-temperature resistant push-in connection of protective conduits. The installation of protective pipe strings with bending radii is possible to a limited extent. Suitable for long-term temperature operation.
  • EMDS pipe bends


    for changing the direction of power lines. Particularly large bending radii for friction reduction when pulling in cables. Suitable for long-term temperature operation.
  • EMDS end caps


    for welding to protective pipe ends for a permanent or temporary material-locking closure of protective pipes. Suitable for long-term temperature operation.
  • Weldable pulling head


    made of PE100 with tightly welded pull-eye. Graduated design of wall thicknesses for multiple use of different SDR classes.
  • Weld-on adapter


    for creating an wall-integrated welding bead between 2 pipe strings without removing the last welding bead made of PE-RT (raised temperature). Suitable for long-term temperature operation.
  • Centric reduction


    for wall thickness compensation of different SDR classes, made of PE-RT (raised temperature), according to DIN 8074/­8074, ISO 24033. Suitable for long-term temperature operation.
  • Centric reduction


    for wall thickness compensation of different SDR classes and outside diameters, made of PE-RT (raised temperature), according to DIN 8074/­8074, ISO 24033. Suitable for long-term temperature operation.
  • EPS Spacer


    with project-specific centre distance for protective pipes according to DIN EN 13163. For exact positioning of EMDS protective pipes in open trenches. Can be individually modified according to customer specifications.
  • Anti-lift device


    Concrete component with customised ground anchor set for securing against pipe uplift with defined centre-to-centre spacing for exact positioning of EMDS protection pipes
  • Cable cover foil


    for safe protection against external influences, extremely stretchable and tear-resistant, according to DIN 54841-5.
  • Route warning tape


    PE composite film according to FTZ 548464 TV1, resistant to ageing and cold, colourfast, permanently legible, with clear film coating over the print.

Accessories

Peeler Set

The power pack for protective jacket pipes according to PAS 1075 type 3. For quick and easy removal of the protective jacket.
More information

Rerounding clamps

The tackler for maximum rounding force when welding with electrofusion sockets.
More information

References

 

Suitable installation

  • Sand bedding


    When laying in a sand bed, the excavated material must be replaced with a sand bedding in accordance with DIN EN 805. Restrictions on the grain sizes of the bedding material must be observed.
  • Without sand bedding


    Due to the verification by an independent testing institute, the installation is possible without a sand bed. This eliminates the additional expense of replacing the excavation with a sand bedding in accordance with DIN EN 805 (transport, landfill).
  • Ploughing


    In the ploughing method, the soil is displaced by a plough blade and the pipeline is placed on the bottom of the soil.
  • Milling


    In the milling process, a pipe trench is cut into the subsoil by machine and the pipeline is laid on the bottom of the trench.
  • Pipe bursting


    Static pipe bursting is the renewal of the old pipeline along the same of the old pipe route, which is shattered by the bursting head and the remaining fragments are pressed into the surrounding soil.
  • Horizontal Directional Drilling (HDD)


    The new installation by HDD is usually carried out in three successive work steps. With the continuous pilot borehole, which is controlled by positioning the route is determined. This is followed by the widening of the borehole and the pulling in of the pipe string.
  • Relining


    In the case of relining with annular space, the new pipe string with a smaller cross-section is pulled into the cleaned old pipeline using a pull-in device.
  • Soil Displacement Method


    In the soil displacement method, a pneumatically operated displacement hammer, a so-called "rocket", is used to excavate an underground cavity. The new pipeline is then pulled into it.
We will be happy to advise you individually on other installation methods specially designed for underground laying.

Want to find out more?
We look forward to hearing from you.
Gerodur MPM Kunststoffverarbeitung GmbH & Co. KG
01844 Neustadt i. Sa.
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